Draft-gear.



w. E. GOPPIN.

I DRAFT GEAR.

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Cam/mda,

W. E. COFPIN.

DRAFT GEAR.

1,105,063. AM'IOATION EL@ MAR' 24' 19u' Patented Julfy 28, 1914.

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wn'NEssEs '75?" "jl A INVENTon M @www tional plan view showing UNITED sjrargns garanti? oracion.,

`W'AL'IER E. COFFIN, OF CLEVELAND, OHIO, ASSIGNOR TO THE NATIONAL MALLEABLE CASTINGS COMPANY, O'F CLEVELAND, OHIO, A CORPURATION GF OHIO.

DRAFT-Gaan.

Specification of Letters Patent.

Patented J M3128, l 914.

Application filed March 24, 1911. Serial No. 616,683.

To all whom it may concern.'

Be it known that I, lVAL'rEn E. Cornia, a

citizen of the United States, and a resident ofCleveland, Cuyahoga county, Ohio, have 'invented a new and useful Improvement in` Fig. 2 is a vertical section of the same; Fig. 3 1s an enlarged secand Fig. 4 is a section on the line IV-IV of Fig. 3.

My invention has relationto draft gears, particularly designed for use on. passenger and interurban cars, and has more particular relation to the draft rigging, being designed to provide a simple, novel and edective rigging.

In the drawings, the numeral 2 designates the head of an automatic coupler of well known type having a rearwardly extendn'rg shank 3. The forward end ot the shank is supported by astirr'up or carry iron Il, with a l' portion having a sliding engagement with a slot 5 of a radlal segment 6 attached to the car framing. The center ot curvature of this segment is coincidentwith the 'center l of swing ofthe coupler. The parts thus far described do not' constitute any part of the present invention, except in combination.

The draft rigging consists of an outer casing,.1nade up of an upper port-ion 7 and a lower portion 7l?, which are adapt-ed to be bolted together and to the under side of the car sills 8 by means ofthe bolts 7. This casing is shown as having diagonal strengthening ribs 7 c', and its interior is circular in horizontal cross-section. Seated within the cylindrical portion of the casing is an inner casing, which is also composed of an, upper portion 9 and a lower portion'fa held together' by means of bolts l0, or other suitable connections. This inner casing contains the draft and butlin'g springs 11, the front follower 12`and the rear follower 13. Theends of the inner casing are rounded or convened to conform to the rounded interior of the outside casing within which the inner casing fits and rotates. Projecting from the forwardend of the innencasing is a portion the draft rigging;

I ll, which incloses the sides ofthe coupler Shank and the rectangular for .fard end of the tail bolt l5, the forward end of the outer casing being cut away to allow this forward projection of the inner casinar to project outwardly therethrough. The tailbolt 15 is secured to the rear end of the coupler shank by means of rivets lf3, or in any ctlier'suitable manner. The portion of the tailV bolt which lies within the shank and through which the rivetsI pass, is preferably rectangular in cross-section, while the portion passing through the springs and througl'i the front and rear "followers is round. The front follower abuts against the rear' end of the coupler shank, and the rear follower abuts againsta key 17 which passesthrough the rear end of the tail bolt.

The operationvis as follows z-In bufling, I

the front follower l2 compresses the springs against the rear follower 13, which is held immovable by its engagement with the side walls of the inner casing, which casing in turn bears against the interior walls of' the outer casing, and which is rigidly secured to the car framing, as before described. In pulling, the front follower' is held immovable', and the springs are compressed by the forward movement of the rear follower, which is pulled forwardly by means of the key 17 attached to the tail bolt.

It will bessen that the coupler head and shank are freeto swing by reason of the rotative engagement of the inner casing with the outer casing, and that the draft rigging acts effectivel in both pulling and buffing with the coup er shank at different angles to the longitudinal center line of the Icar body. rlhe inner casing, which contains the springs, is, in effect, a large hollow pivot. which is journaled within the larger outer casing and' furnishes a pivota point for the swinging motion of the coupler shank.

It will be obvious that the construction. of

Vthe coupler shank and the mode of connectcoupler and coupler shank, of a draft rigging comprised of an inner and an outer casing, the inner casing being mounted for pivotal movement within the outer casing and having an extension projecting through the forward Wall of the outer casing, said inner casing havinr a draft rigging spring and followers therein, the two casings being in substantially horizontal alinement, 'suhstantially as described.

v 2. A draft rigging comprising an outer l sectional casing having concaved inner hearing Walls, an inner casing within the outer casing and having convex ends adapted to turn upon the concave hearing' Walls .of the outer casing, the outer casing having an f r i opening at its forward end, and the inner casing having an extension projecting through said opening, together with spring l5 and ollower mechanism Within the inner casing; substantially as described.

In testimony whereof, I have hereunto set my hand.

WALTER E. COFFIN.

Witnesses GEO. F. WILHELM. BENmNmLDs, Jr. 

